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Counseling Astrology Advice | Tarot Advice | Parenting Dating Advice | Love Advice | Divorce Advice Legal Advice | Debt Advice | Career Advice No, an object cannot be cast to a primitive value. 79. What is the difference between a static and a non-static inner class? A non-static inner class may have object instances that are associated with instances of the class's outer class. A static inner class does not have any object instances. 80. What is the difference between the String and StringBuffer classes? String objects are constants. StringBuffer objects are not. 81. If a variable is declared as private, where may the variable be accessed? A private variable may only be accessed within the class in which it is declared. 82. What is an object's lock and which objects have locks? An object's lock is a mechanism that is used by multiple threads to obtain synchronized access to the object. A thread may execute a synchronized method of an object only after it has acquired the object's lock. All objects and classes have locks. A class's lock is acquired on the class's Class object. 83. What is the Dictionary class? The Dictionary class provides the capability to store key-value pairs. 84. How are the elements of a BorderLayout organized? The elements of a BorderLayout are organized at the borders (North, South, East, and West) and the center of a container. |
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